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[fuzz/draw] Call _get_glyph_extents 

Other render related APIs also may be added also later such
as ot-color and future rendering things.
This commit is contained in:
Ebrahim Byagowi 2020-02-29 14:11:46 +03:30
parent 5ab50eebd7
commit 86c40b3a1d
1 changed files with 11 additions and 2 deletions
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13
test/fuzzing/hb-draw-fuzzer.cc
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@ -109,11 +109,20 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) _quadratic_to);
hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) _cubic_to);
hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) _close_path);
for (unsigned i = 0; i < glyph_count; ++i)
volatile unsigned counter = !glyph_count;
for (unsigned gid = 0; gid < glyph_count; ++gid)
{
hb_font_draw_glyph (font, i, funcs, &user_data);
hb_font_draw_glyph (font, gid, funcs, &user_data);
assert (!user_data.is_open);
/* Glyph extents also may practices the similar path, call it now that is related */
hb_glyph_extents_t extents;
if (hb_font_get_glyph_extents (font, gid, &extents))
counter += !!extents.width + !!extents.height + !!extents.x_bearing + !!extents.y_bearing;
if (!counter) counter += 1;
}
assert (counter);
hb_draw_funcs_destroy (funcs);
hb_font_destroy (font);